How to Increase Upload Speed on 5G Internet

Slow upload speeds on a 5G connection are frustrating — especially when 5G promises so much. You're sitting on a network built for gigabit performance, yet uploads crawl. The good news: upload speed on 5G isn't fixed. Several layers of your setup influence it, and many of those are within your control.

Why 5G Upload Speeds Are Often Lower Than Expected

5G networks are engineered primarily around download performance. This is intentional. Most consumer behavior — streaming, browsing, loading apps — is download-heavy. Upload bandwidth is typically allocated a smaller slice of spectrum, which means even a healthy 5G connection can show asymmetric speeds: fast downloads, modest uploads.

That said, "modest" shouldn't mean unusable. If uploads feel significantly slower than your plan or device should support, something else is usually at play.

What Actually Affects 5G Upload Speed

Upload performance on 5G is shaped by a stack of variables — network, device, environment, and configuration.

📶 Signal Quality and Band Type

5G runs on three frequency bands, each with different behavior:

Most users spend most of their time on mid-band 5G, which offers the best realistic upload improvement. If your device is connecting to low-band 5G — which looks like "5G" on your screen but behaves closer to LTE — upload speeds reflect that.

You can check which band you're on through your device's network diagnostic tools or field test mode.

Device Hardware and Modem Quality

Your phone or hotspot device contains a baseband modem — the hardware that processes cellular signals. Modem generation matters. Newer modems support 5G Carrier Aggregation (CA), which combines multiple frequency channels for higher throughput, including on uploads.

If you're using an older device that technically supports 5G but has a first-generation 5G modem, you're not getting the same upload capability as a current flagship. This is one of the most overlooked gaps between "5G capable" and "5G optimized."

Network Congestion

5G towers share capacity across all connected users. During peak hours — evenings, events, dense urban areas — upload speeds drop for everyone on that cell sector. This isn't a device problem or a settings problem. It's a shared infrastructure reality.

If uploads are consistently slow at predictable times, congestion is likely a factor. Testing at off-peak hours (early morning, midday on weekdays) helps you separate congestion from other issues.

Practical Steps to Improve 5G Upload Speed

Check and Prioritize Your 5G Band Connection

Some devices allow you to lock to a preferred network mode or band in developer settings or network settings menus. Forcing your device to prefer mid-band 5G over low-band can meaningfully improve upload throughput — though availability depends on your carrier, region, and device.

On Android, developer options sometimes expose band-locking settings. iOS provides less granular control, but switching airplane mode off and on can prompt your device to re-register to the strongest available signal.

Reposition for Better Signal

Physical placement makes a measurable difference. mmWave 5G drops dramatically through walls, windows, and distance. Even mid-band 5G degrades with obstruction.

If you're using a 5G hotspot or home gateway device:

• Position it near a window facing the direction of the nearest tower
• Elevate it — signals often travel better higher up
• Keep it away from dense metal objects, microwaves, and other interference sources

For phones used as hotspots, the same principles apply.

Reduce Background Upload Traffic

Applications constantly upload in the background — cloud backups, photo sync, app updates, telemetry data. If multiple processes are competing for upload bandwidth simultaneously, each gets less.

On any device:

• Schedule large cloud backups (Google Photos, iCloud, OneDrive) for overnight or off-peak periods
• Pause automatic app updates during upload-intensive tasks
• Check active sync settings for productivity apps

This is particularly relevant on hotspot setups where multiple connected devices all contribute background upload traffic.

Update Device Firmware and Carrier Settings 🔧

Carriers push carrier settings updates that optimize how your device interacts with their network — including upload handling. These are separate from OS updates and are easy to miss.

On iPhone: Settings → General → About (a prompt appears if an update is available). On Android: these typically apply automatically, but checking for system updates ensures nothing is pending.

Device firmware updates from manufacturers also sometimes include modem firmware improvements that affect cellular performance.

Consider QoS Settings on Hotspot Devices

If you're using a dedicated 5G hotspot or router, many include Quality of Service (QoS) controls in the admin interface. QoS lets you prioritize traffic from specific devices or applications — so your work uploads get bandwidth before background processes from other connected devices.

Not all hotspot devices expose these controls, but those from carriers or third-party manufacturers often do through a web interface (typically accessed at 192.168.1.1 or similar).

The Variables That Make This Personal

The gap between a 5G connection that uploads at 20 Mbps and one that uploads at 150 Mbps isn't always the network. It's often the combination of device modem generation, which band you're connecting to, how congested your tower is, and how many processes are competing for that upload pipe.

A user with a current flagship phone in a mid-band 5G coverage area with light background traffic has a fundamentally different starting point than someone with a three-year-old 5G device in a dense urban sector during peak hours — even on the same carrier plan.

Where your upload speed lands depends on which of these variables are actually driving your slowdown — and that requires looking at your own setup, one layer at a time.